Cylindrical geometry

Hi there,

I'm trying to model RF coils for MRI with Comsol, and I'm not finding it terribly easy to create the actual geometry. As can be seen in your example (www.uk.comsol.com/showroom/gallery/4101/), MR coils often end up looking like a flat circuit printed on another geometry -- there the example is a symmetric birdcage coil, but sometimes we want to create something not symmetric wrapped around a cylinder (or another more complicated shape).

My question is this: I'm not so sure how to easily create geometries like that shown in the example. Is it possible to "morph" or "melt" one structure onto another, as you can often do in other 3D modelling programs? I've tried playing around with creating a local coordinate system, but it appears that these are only for the solver's use -- and you can't easily define a workplane at constant r on a cylinder, for example.

Do you have any tips for how to create these sorts of structures? I basically want to draw copper on the sides of cylinders/other shapes!

Thanks for your help.